Grate for furnaces or stoves



(No Model.) 2 SheetsSheet l.

W. J. OWENS, A. L. GOODENOW & A. T. WHITING. GRATE FOR FURNACES 0R STOVES.

No. 247,995. I Patented 001;. 4,1881.

N. PE. :zns. Plvolo-Lllhogmyllmr. war-m ac.

' support to the main-grate frame.

UNITED STATES WILLIAM J. OWENS, ALBERT L. eoonENow, AND ALSON T.

UTIO'A, NEW YORK. I

"PATIENT; OFFICE.

WHITlNG, OF

.GRATE FOR FURNACES OR SITOVESV.

SPECIFICATION forming part of Letters Patent No. 247,995, dated October 4, 1881.

. Applicationfiled April 3i),1881. (No model.)

v To all whom it may concern: 1

Be it known that we, WM. J. OWENS, AL--' BERT L. GooDENow, and ALSON T. WRITING, citizens of the United States, residing at Utica, in thecounty of Oneida and StateofNewYork'; have invented certain new and useful Improve- 'ments in- Grates for Hot-Air Furnaces, Stoves,

and Steam Heaters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will:

enable others skilled in the art to which it ap-i pertains to make and use the same, reference being had to the accompanying drawings, and to the letters or figures of reference marked;

I 5 thereon, which form a partof this specification.

Our invention relates to improvements in; grates; and it consists in details of construe-i tion that will be more fully set forth in the! specification and claims, and pointed out in the drawings, in whieht Figure 1 is a plan view of the main grate.-

Fig. 2 is a vertical section of the same. Fig.-

3 is a section of the main-grate support and the rocking mechanism for the supplementalgrate bars. Fig. 4 is a plan view of a supplemental-grate frame and supplemental-grate bars. Fig. 5 is a perspective view, partly in section, of the main-g-ate frame and its actu-' vating mechanism. Fig. 6 is a plan view of the: Fig. 7 is a' detail view, showingthe end of supplemental-j grate barsjournaled in the ends of the supplemental-grate frame. Fig. 8 is a perspective .view of one of the supplemental-grate bars 5 and the rocking mechanism. Fig. 9 is a perspective view of the mechanism for locking the grate-support to the furnace. Fig. 10 is a section showing the mechanism for locking the :r-main grate to the supplemental-grate framed 4.0 Fig. 11 is a perspective view of our device.

Referring more particularly to the drawings, A is thernain grate, of circular form, provided with the outwardly-projecting points a" anda groove, a, which fits a roller, 0. The grate- 5 bars proper, D, project inwardly and downwardly, leaving at their inner edges a rectangular space, P.

D D are grate bars extending inwardly and downwardly, and connecting with bars D, Which form a track on which a lower suppleings N are made preferably wedge-shaped on the under side, Figs. 2 and 3, so as to provide more room for the free discharge of ashes, &c. This grate-rest G is further provided with slots W to engage with the lugs L on the =frau1e A.

'In order to lock the frames A and B toget her and compel frames A and Bto move in unison, the lug L on frame. A is moved out of slot W, and frame A is turned to the right,

.is provided with the slots W and sockets N in which rollers 0 move. These rollers support 1 the, main frame A, and the distance they can -travel is limited by the length of the sockets N.

Attached to the main frame is ahandle, K,

which in reality'is an extension of said frame,

being cast in one p ece with it. The movement of this bar or handle is limited by the sides of the furnace frame or support Y, (Indieated in dotted lines in Fig. 11.)

The grate-rest G is provided with the trunnions x, which rest inthe sides of said frame Y. The support G has secured to and depend- 8o ing from it a plate, M, provided with rigid horizontal pins F, upon which rest the bearings E of the gratebars 0. These grate-bars are journaled in a supplemental frame, B, which slides out and in on a track formed by the extension D of the grate-bars D. M

The outerjournals of bars 0 are held in position by a cap, Q, let into the frame B, and secured to said frame by screws or. in any other suitable way. The several parts of the 9o grate are placed in position in the following manner: The trunnions w of grate-rest G-are placed in their beds on the frame y, and the front part of the rest is dropped down. The rollers O are then placed in the open socket N. The frameB is placed on the track D in the frame A, and this frame isthenplaced on the rest G, so that the lugs L come into the slots W. At the same time the groove in the under side of frame A rests on the rollers 0. Ice

The frame A is then moved to the right, so as to clear the lug L from the slot W. The rest -Gr and the superincumbent parts are then raised up by means of the arm T, secured to rest Gr. Said arm passes between the projections of a 1ock-piecc,p, and is secured by a pin, p, passing through slots in said lockpiece and an opening in the arm T. This lockpiece p is secured to the furnace-frame, and consequently the arm T is held securely in place.

When the parts are in position, as above explained, the lug L cannot get back to the slot W, for the reason that the rotary movement of the main frame (of which lug L forms a part) is limited in each direction by the play of the bar K, which has been before described. The grate-bars 0 being journaled in the frame B,

when that frame is caused to move back and forth with frame A said bars will rock back and forth by virtue of the forked rests E mov-- ing on the pins F. In consequence of this construction and arrangement of parts when the two frames are caused to rotate the ashes and clinkers fall from the bars D D on the bars 0,;

and are thus broken up by the rocking motion of bar 0, thus preventing choking and filling up of the space occupied by the frame B and drawn entirely out by reason of the stops of the frame coming in contact with the stops d on the track. By making this space rectangular we obtain for the same size of furnaces more room for the ashes, 850., than if the space was circular.

Ordinarily the clinkers are broken up by the rotary movement of the main-grate frame, but the clinkers, 850., which fall upon the center bars are not given any motion, and act to choke up the furnace and prevent free passage of air from beneath. In our device this is prevented by the motion given to the supplemental frame B and grate-bars 0. Again, as the sockets N are made open, it any ashes or pieces of clinkers get into such sockets they will be broken up and will pass through to the ash space.

Having thus described our invention, what we claim is- 1. In a furnace or stove, an upper main-grate frame provided with bars which extend downwardly and inwardly, substantially as described, so that the edges form a rectangular space, and having two horizontal bars attached to the corner bars of the main frame, to form atrack upon which rests and slides a supplemental-grate frame, as set forth.

2. In afurnace or stove, a supplemental-grate frame resting on a track formed by horizontal bars which are secured to the corner bars of the main-grate frame, and provided with rocking grate-bars journaled in said supplemental frame, the two frames being so joined together, substantially as described, that the movement of the main frame causes the supplemental frame to move in the same plane and give a rocking motion to the grate-bars, as set forth.

3. In a furnace or stove, the combination of an upper grate-frame, A, having locking-lugs, as described, a rest for said frame having slots for the reception of the lugs, and a supplemental grate resting and moving on atrack, which depends from and forms a part of the main grate, as set forth.

4. In a furnace or stove, an upper grateframe provided with grate-bars I), which have extensions D, which extend downward and are connected together on opposite sides, thereby forming a track for a supplemental-grate frame, B, as set forth.

5. In a furnace or stove, a lower supplemental-grate frame, B, provided with gratebars journaled in said frame, such bars having forked rests moving on pins, which are attached to a plate on the grate-rest, whereby a. rocking motion is given to said grate-bars when the supplemeutal'grate frame is rotated, substantially as described.

6. In a stove or furnace, the grate-rest G, having the open and wedge-shaped boxes N, the slots W, and the locking'plate T, substantially as and for the purpose set forth.

7. In a furnace or stove, an upper or main grate frame provided with lugs L, adapted to engage with slots W in the grate-rest, so as to lock said frame and rest together, substantially as set forth.

8. In a stoveor furnace, a grate-rest, G, provided with a plate, T, secured to a 1ock,p, fastened to the under side of the furnace base or frame, substantially as set forth.

9. In a furnace or stove, the supplemental frame B, sliding on a track, as described, and provided with revolving grate-bars, said bars beingjournaled in the frame and held in position therein by a removable cap, Q, substantially as set forth.

10. The combination, with agrate, ofau operating-bar, K, provided with a socket or receptacle which has an orifice in its bottom, as

shown and described.

In testimony whereof we aifix our signatures in presence of two witnesses.

WILLIAM J. OWENS. ALBERT L. GOODENOW. ALSON T. WHITING.

Witnesses:

LOTON S. HUNT, FRANCIS P. Wroxns. 

